Yesterday my car start skipping like it was out of gas,didnt seem to go unless floored and still not much,but never failed to start,about 30 mins later crunk and drove a few feet,never hesitated again,it's a 00 gp gtp,my gas hand was going up and down,my fuel pump is still working I believe,who ever before me replaced the to cool pack cause it has that yellow junkyard writing on it,it has a quarter tank in it,I called the tow truck to come get it and take it home,got home drove it and now nothing,what can it be??